Flapping/slapping noise from front end.... Then car goes crazy.

[Dani_B19]

Morning gents.

Set off to work this morning, all was fine, got up onto the main road thats just been resurfaced, drove along it and noticed that there was a flapping/slapping noise coming from the front end, not massively loud but loud enough to hear, pulled out of a junction and put fot down and the car started to splutter, dump valve was around 0psi mark but was fluttering/flickering, revs were all over the place, pulled over and car was wanting to die. Turned engine off, left it 2 mins and fired back up, all was fine, car fired up and ran smoothly, boosted fine etc.
Anyone any ideas?

 

[Syvo]

sounds like limp mode n75 valve possibly

 

[Dani_B19]

What about the noise though?

 

[Syvo]

hmm im a bit unsure with the noise issue.

 

[s3dave]

Loose chippings caught in the tread?

 

[Dani_B19]

Yeah thats what i thought about the noise but its weird how when i stopped then started again the noise went away! Need to scan it when i get in but its bafflin how chippins can effect it.

 

[Dani_B19]

Just to add to this.
The cars got a loud tapping/clicking noise comig from the back of the engine/exhaust manifold. Any ideas on what t could be?

 

[Dani_B19]

Just to add to this.
The cars got a loud tapping/clicking noise comig from the back of the engine/exhaust manifold. Any ideas on what t could be?

 

[coatesy]

does this noise happen as soon as the car is turned on or when its been running for about five mins ?

 

[Dani_B19]

Tbh ive only noticed it when the cars been running! What you got in mind mate? Cam chain?

 

[coatesy]

i don't really know mate i know feck all about engines lol but my T sport after its been running for about 5 mins starts to tick. i know this is going to sound strange but i got told that 1.8t engines make like a ticking noise when there not ran on fuel like v power or super unleaded. i think its complete bull tbh.

you say your ticking is coming from the back ill have to have a listen to mine because i though my noise was coming from the front another stupid thing couldn't it just be the spark plugs working away if its at the back of the engine? again i say i don't have a clue what im on about im just using common sense.

 

[Y83OLK]

cracked manifold, turbo housing/ loose egt union?.. does the noise increase in volume/ tempo with engine revs?.
..may explain why it goes when cooled down.

 

[coatesy]

does it sound like that? that's what mine sounds like

[url]http://www.youtube.com/watch?v=WCEg2Jc7VJY


[/URL]

 

[Dani_B19]

Was thinking cracked manifold, will check the egt probe.

Coatesy mine does sound like that but louder, ill try to get a video up from the back of the noise.

 

[Dani_B19]

Was thinking cracked manifold, will check the egt probe.

Coatesy mine does sound like that but louder, ill try to get a video up from the back of the noise.